Product Details

Large-size Heavy Duty Universal Cylindrical Grinding Machine

BG-500 BUG-500 BG-630 BUG-630

Main Outlook

Main Performances

Features and Performance

BG-500/BG-630 type cylindrical grinding machines are sutiable for grinding external cylindrical surfaces of rotary workpieces of cylinder and taper.
BUG-500/MBUG-630 type universal cylindrical grinding machines are suitable for grinding external or internal surfaces rotary work-pieces of cylinder and taper.
The longitudinal movement of the worktable is driven by hydraulic stepless variable speed transmission or hand-wheel transmission; The guideway is covered by soft pad and features on pressed oil lubrication, absorbing vibration, anti-friction as well as smooth low-speed operations.
For the wheel head, its fast forward/backward of infeed is driven by hydraulic system, while rough and refined feed is controlled hand-wheel transmission. The grinding wheel spindle is supported by high-rigidity sleeve type hydrostatic/hydrodynamic bearing, with the characteristics of high rotary precision and high rigidity.
The work head adopts the way of double-speed motor-three-gear transmissions, with the characteristics of high transmission precision, good rigidity and easy-to-operate. The work head spindle of universal type is of the structure of sliding bearing and the clearance of fore bearing is adjustable for adapting to meet the needs of installing center or chuck in grinding.
The work head spindle of universal type can e adjustable in counter-clockwise direction for any angle within 90 degrees so as to facilitate the grinding of internal or external taper workpieces with chuck.
For the series of universal type, they are with the function of internal grinding; with the internal grinding spindle supported by rolling bearing, four rotary speeds can be achieved through replacing belt pulley in order to grind internal cylindrical workpieces of various diameters.
The wheel dressers are respectively installed on worktable and tailstock and provided with two kinds of dressing.
With a rational integral layout, the operating handles of the machine tool are centralized arranged and visualization, thus to make the machine easy to control and safe to operate.

Specifications List

Technical Parameters

Specifications		Units	*BG-5002000**	*BUG-5002000**	*BG-6303000**	BUG- *6303000**
Height of center		mm	270		335
Distance between centers		mm	2000		3000
Maximum swiveling diameter		mm	Φ500		Φ630
Maximum grinding length		mm	2000		3000
Range of external grinding		mm	Φ30-Φ500		Φ30-Φ630
Range of internal grinding		mm	-	Φ50-Φ250	-	Φ50-Φ300
Maximum internal grinding depth(over 45mm)		mm	-	250	-	250
Maximum workpiece weight between centers		kg	1000		2000
Grinding wheel	ODWID	mm	Φ75075Φ305		Φ750*75Φ305
	Maximum linear speed	m/s	35		35(45)	35
Swiveling angle of worktable	Clockwise	°	2		2
	Counter clockwise	°	4		3
Taper hole of spindle	Workhead		Morse6#		Metric 80	Metric 80/Morse6#
	Tailstock		Morse6#		Metric 80	Metric 80/Morse6#
Total power		kw	18	20	24	26
Net weight		kg	8100		16000
Overall dimensions(LWH)		mm	600022002000		780026002000

Notes: According to per customer's require, we can produce different machines for different length of workpiece, such as 1500mm, 2000mm, 2500mm. 3000mm, etc.

Working Accuracy

Inspection content	Sketch of test-piece	Units	BG-500 BG-630	BUG-500 BUG-630
Grinding accuracy of test piece between centers	Roundness	mm	0.0025	0.0025
	Consistenct of the diameter in longitudinal section	mm	0.008	0.008
	Roughness	um	Ra≤0.32	Ra≤0.32
The grinding accuracy of short testpiece on chuck	Roundness	mm	-	0.0035
The grinding accuracy of short testpiece on chuck	Roughness	um	-	Ra≤0.32
The accuracy of testpiece internal grinding on chuck	Roundness	mm	-	0.0025
	Consistency of the diameter in longitudinal section	mm	-	0.015
	Roughness	um	-	Ra≤0.63

Layout Plan(Unit: mm)

Model	A	B	C	D
BG-500*2000	2615	960	5230	7150
BUG-500*2000
BG-500*2500	3015	1210	6030	8450
BUG-500*2500
BG-500*3000	3535	1500	7070	10070
BUG-500*3000
B(U)G-630*2000	2250	1050	5500	7600
B(U)G-630*2500	3650	1850	7300	11000

The foundation depth is determined by the property of soil and should not be less than 400mm.